Good Eye Optometry - Professional Optometrist in Brentwood, California

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Vision Problems

Presbyopia

Presbyopia or "old eye" is a condition of reduced elasticity of the lens due to the normal aging process. This loss of elasticity affects the ability of the eye to focus close up. The condition may become evident around age 40, making reading of small print more difficult.

Hyperopia

Hyperopia is the condition of not being able to focus clearly at close range while distant objects may be viewed easily without the aid of glasses. Hyperopia or "farsightedness" results from the length of the eye being too short in proportion to the curvature of the cornea. Light is not accurately focused on the retinal screen but at a point just beyond it, thus causing a blurring of vision close up. Hyperopia also can vary from mild to more extreme cases.

Astigmatism

Astigmatism is the term used to describe any blurring of vision caused by a cornea that is oval shaped rather than round. This irregular football shape causes light to enter the eye unevenly from different angles at the same time. Light then focuses at multiple points on, in front of and/or behind the retinal screen. This can result in "double vision" or a difficulty in seeing clearly at either near or far distances. Astigmatism is often found in conjunction with cases of myopia or hyperopia. It is the most common of focal problems.

Myopia

Myopia or "nearsightedness" is the condition of not being able to focus at a distance while near objects may be seen clearly even without the aid of glasses. Myopia can vary by degrees from mild to severe. Myopia results from the shape of the eye being too long in proportion to the curve of the cornea, the eye's outer covering. This causes light entering the cornea to fall short of focusing on the retina, the imaging "screen" at the back of the eye. Imagine a film or slide projection where the image is blurred because the light is not properly adjusted to a focal point on the surface of the screen.

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